為什么‘慕課網’是指向e.date啊？
<!DOCTYPE html>
<html>
<head>
??? <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
??? <title></title>
??? <style>
??? .left div,
??? .right div {
??????? width: 500px;
??????? height: 50px;
??????? padding: 5px;
??????? margin: 5px;
??????? float: left;
??????? border: 1px solid #ccc;
??? }
??? .left div {
??????? background: #bbffaa;
??? }
???
??? .right div {
??????? background: yellow;
??? }
??? </style>
??? <script src="http://libs.baidu.com/jquery/1.9.1/jquery.js"></script>
</head>
<body>
??? <h2>.focusin()方法</h2>
??? <div class="left">
??????? <div class="aaron">
??????????? 點擊聚焦：<input type="text" />
??????? </div>
??? </div>
??? <div class="right">
??????? <div class="aaron1">
??????????? 點擊聚焦并傳遞參數：<input type="text" />
??????? </div>
??? </div>
??? <script type="text/javascript">
??????? //input聚焦
??????? //給input元素增加一個邊框
??????? $("input:first").focusin(function() {
???????????? $(this).css('border','2px solid red')
??????? })
??? </script>
??? <script type="text/javascript">
??????? //不同函數傳遞數據
??????? function fn(a) {
???????????? $(this).val(a.data)
??????? }
??????? function a() {
??????????? $("input:last").focusin('慕課網', fn)
??????? }
??????? a();
??? </script>
</body>
</html>
2016-12-11
focusin(參數1，參數2)，參數一是你要傳遞的數據，參數二是你將數據傳遞給的函數a，函數a的第一個參數是event對象，他的屬性data的值就是你傳遞的數據，即參數1，我是這么理解的，希望對你有所幫助。